Barry(?) Blaisdell(?) (Its been a while since ive played FS98) has a bunch of good models including DHC-8s, from -100 to -400, Twin Otters, C-130s and some CRJs and Challengers. Type his name into either flightsim.com or a Search engine and you might come up with some stuff, however, as mentioned earlier, this is all coming from not so recent memory!!
Once you have tasted flight, you will walk the earth with your eyes turned skyward; for there you long to return